If you own a card from another company you can use a Navionics Update card to get a Navionics+ card. This is place since March 2015
The only difference between using a Navionics Update card with a older Navionics card version is: you can use any other brands that are list on my 1st post and you will be ending with a Navionics+ and you are still own you're Bluechart or Insight or wathever.
http://navionics.force.com/kb/articles/ ... earch&pn=1This is the list of the one that can be use:
- Garmin Bluechart
- Garmin Bluechart G2
- Garmin Vision
- TRAK marine & Lakes cards
- Lowrance Insight cards
- Lowrance Insight HD cards
- Lakemaster cards for Lowrance
- Fishing Hot Spots cards
- CMAP MAX on SD/mSD
- CMAP NT+ on SD/mSD
- CMAP NT on SD/mSD